The Emperor

Darth Sidious was trained in the ways of the Sith by his master, but soon struck him down. Darth Sidious then became a politician, using his real name Palpatine instead of Darth Sidious and slowly rised to power. He was soon the leader of the Republic as Palpatine, and secretly the leader of the Separatists as Darth Sidious. After a long war between the Republic, lead by the Jedi and fought by clones, and the Separatists, lead by sith and fought by droids, he slowly gained more control. After the defeat of his two apprentices, Darth Maul and Count Dooku, Palpatine turned Anakin Skywalker to the Dark Side and renamed him Darth Vader. After he had complete control over the Republic, all clones and Anakin were ordered to kill all Jedi. After the elimination of most of the Jedi, Darth Sidious announced himself Emperor and named the republic his new Empire. The Emperor and Vader ruled until eventually two surviving Jedi, Obi-Wan Kenobi and Yoda trained Luke Skywalker, Anakin's unknown son, in the ways of the Jedi, so he could defeat the Empire. When the second Death Star was constructed, the Emperor and Darth Vader captured Luke and brought him on board. Vader and Luke battled in front of the Emperor. Luke won but told the Emperor he would never serve him. In rage, the Emperor unleashed lightning on Luke. At that moment Vader realized he must save his son, so he sacrificed himself to kill the Emperor by throwing him down the elevator shaft of the Death Star. The Emperor died, and his Empire was destroyed right after by the Rebel Alliance.